1st question - Is there any possibility to keep last used position in menus (user menu, plugin menu...) after menu is recalled?

2nd one - I can define new panel mode (Options - File panel modes) with using Insert key. Where and how can I use this mode then?

3rd one - I noticed a red character (don't know if A or R) in right bottom corner of Far window on key bar (similar as red R character during recording macros). I don't know how I invoked it. What does this character mean?